Dr. Dre and Snoop Dogg will turn the desert into one giant West Coast party when they hit the stage for a co-headlining performance at the Coachella Valley Music and Arts Festival this Sunday and again on April 22 in Indio, Calif. Joining them will be plenty of surprise guests (Eminem? Wiz Khalifa?) and JoiStaRR, who will provide background vocals.

The L.A.-based singer-songwriter, who previously toured with Kanye West, took a break from rehearsals to speak to Rap-Up.com about being a part of the historic hip-hop moment. Find out what you can expect from the highly-anticipated show, whether we’ll get to hear some long-awaited Detox material, and some of the surprises that await.

So how did this all come together?
Adam Blackstone, who was Kanye’s former musical director—we worked together on the “Glow in the Dark” tour—he called me the day after I got back from SXSW and he’s like, “Are you available to do some shows with Dr. Dre for Coachella?” I’m like, “Well, sure. Let me check my schedule, but I’m sure I can clear it.” So a few weeks passed and he called me and said we’re locked in and we need to come to rehearsal.

What’s Dr. Dre like?
He’s very, very into his craft. I’m very inspired by his work ethic. He’s there at rehearsal on time, he’s there ready to work, and I think that’s very inspiring for someone like me, an up-and-coming artist to see someone that’s established still be that hungry and that focused. His personality is really laid-back and he’s just really cool. Him and his wife are very, very generous, lovely people. I felt at home right away and I had only known them like a week. I feel like his little sister at this point.

Where have you been rehearsing?
We rehearsed in Burbank and then we moved production to an airport hangar in Santa Monica because the stage is so huge, we need to rehearse lighting and all that type of stuff. The stage is amazing. I can’t wait for people to see it and to see people’s reaction to what actually takes place. There’s a lot of surprises and a lot of surprise guests. People are gonna be very happy when they see the show.

What material will you guys be performing?
We’re gonna basically be performing all of Dre’s hits and then Snoop’s. It’s going to be very epic and I’m just really grateful to be a part of history being made. Dre said that this year it will be 20 years that him and Snoop have been working together since they did “Deep Cover.” And that’s amazing to even be a part of this moment in their lives. I get to be onstage singing with everyone involved. It’s gonna be crazy.

Are we going to hear any new stuff? Maybe something off Detox?
Umm… OK, yes [laughs].

Rolling Stone reported that Eminem and Wiz Khalifa will be among the surprise guests.
I’m not gonna say anything. We’ll just have to see if they show up.

Nate Dogg is said to be appearing via a hologram, according to TMZ.
I’m not privy to that information, but there’s definitely a tribute to Nate Dogg.

What would you tell fans who are attending Coachella this weekend?
They can expect to have wide-open mouths and a jaw-dropping experience with this show. It’s gonna be very huge. Apparently it’s supposed to be like 100,000 people coming. It’s gonna be packed, it’s gonna be amazing, it’s gonna be fun. They’re gonna hear all their favorite songs and some stuff that they’ve been dying to hear.

JoiStaRR’s debut album Magic is due this summer on My Block Inc. Download her mixtape Magic Monday and listen to her single “I’m Not Bleeding” below.